V58C2128(804/404/164)S
Figure 40 - AUTO REFRESH MODE
t
t
t
CL
CK
CH
( (
) )
( (
) )
( (
) )
/CK
CK
( (
) )
t
t
IS
IH
( (
) )
( (
) )
( (
) )
( (
) )
CKE
VALID
NOP
VALID
NOP
t
t
IS IH
( (
) )
( (
) )
( (
) )
( (
) )
COMMAND
NOP
PRE
NOP
AR
NOP
AR
NOP
ACT
( (
) )
( (
) )
( (
) )
( (
) )
A0-A8
A9, A11
A10
RA
RA
( (
) )
( (
) )
( (
) )
( (
) )
ALL BANKS
ONE BANK
( (
) )
( (
) )
RA
BA
( (
) )
( (
) )
t
t
IS IH
( (
) )
( (
) )
( (
) )
( (
) )
BA0, BA1
DQS
*Bank(s)
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
DQ
DM
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
( (
) )
t
t
t
RC
RP
RC
DON'T CARE
* = "Don't Care", if A10 is HIGH at this point; A10 must be HIGH if more than one bank is active (i.e. must precharge all active banks)
PRE = PRECHARGE, ACT = ACTIVE, RA = Row Address, BA = Bank Address, AR = AUTOREFRESH
NOP commands are shown for ease of illustration; other valid commands may be possible at these times
DM, DQ and DQS signals are all "Don't Care"/High-Z for operations shown
V58C2128(804/404/164)S Rev. 1.6 March 2002
50
MOSEL [ MOSEL VITELIC, CORP ]
